Aa
A
A
A
Close
Thyroid Disorders Community
26.1k Members
Avatar universal

Do I have the right dosage, still feeling tired

How long does it take for the thyroid medication to kick in?  And do I have the right dosage?  These were my test results, the doctors started me off at 25 mcg, it's only been one week of taking them, and not sure how long it takes to feel the effects.  I'm also trying to conceive, so I know the TSH levels are too high, so wanted to know how long it takes for them to drop.

Free T4 - 1
TSH - 3.34
T3 Free - 3.1
B12- 460
Vit D3 - 44
5 Responses
Avatar universal
Please post the reference ranges for your FT3 and FT4.  Ranges vary lab to lab and have to come from your own lab report.
Avatar universal
FT3 range is 2.3 - 4.2 pg/mL - mine is 3.1
Free T4 range is 0.8 - 1.8 ng/dL - mine is 1
Avatar universal
It takes 4-6 weeks before the dose you are taking reaches its full potential in your blood.  At 4-6 weeks (I'd be happy with 4), you have to have labs drawn again to evaluate what the dose has done.  Most likely, a change in dosage will be in order.  Until, you are on the correct dose for you (we're all different, and this isn't predictable), both your symptoms and your labs might actually get worse for a while.  Every time your dose is changed, you have to wait 4 weeks and do it all over again.

Do you have hypo symptoms?
Avatar universal
Yes, I do, I've gained weight in just a year, and keep gaining despite exercising and eating healthy, and I'm always tired, I could sleep for 12 hours and still feel like I can sleep more, and I'm always cold.  Thanks for the feedback, just wanted to make sure how long it took to feel more alert and not so down and sleepy all the time.  
Avatar universal
It takes a while.  Just be sure to follow up.  You're on a small dose, so you'll probably have to adjust it.  Best of luck.
Have an Answer?
Top Thyroid Answerers
649848 tn?1534633700
FL
Avatar universal
MI
1756321 tn?1547095325
Queensland, Australia
Learn About Top Answerers
Didn't find the answer you were looking for?
Ask a question
Popular Resources
We tapped the CDC for information on what you need to know about radiation exposure
Endocrinologist Mark Lupo, MD, answers 10 questions about thyroid disorders and how to treat them
For people with Obsessive-Compulsive Disorder (OCD), the COVID-19 pandemic can be particularly challenging.
A list of national and international resources and hotlines to help connect you to needed health and medical services.
Here’s how your baby’s growing in your body each week.
These common ADD/ADHD myths could already be hurting your child